PDF malware analysis — malicious · 3f88070314557d97

MALICIOUS

PDF

123.1 KB

MD5: b022665fcabc1e0199dc0f6c9ecaa490 SHA-1: 3e961e3fb0d6366970d73f5473db1672aa6c7fde SHA-256: 3f88070314557d970c4392227ed9671901d095d79f1fd2a5d402c037fa664a0b

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as Pdf.Exploit.Dropped-78. It contains an embedded script payload, indicating it is likely designed to exploit a vulnerability and download a secondary payload. The presence of an XFA form further supports its exploitability.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD

PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.

URL http://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_pdf_script_00000329.bin` `f930b05c6a1dc66b895daedc2acc4628f6c23e7a8179a2030c2bedba919ad3da`	pdf-embedded-script	PDF raw stream script payload at offset 0x329	125342 bytes

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